Threshold Filtering

Threshold filters, following the guidance of Florida Department of Environmental Protection’s (FDEP) Division of Environmental Assessment and Restoration (DEAR) are used to exclude specific results values from the SEACAR Analysis. Based on the threshold filters, Quality Assurance / Quality Control (QAQC) Flags are inserted into the SEACAR_QAQCFlagCode and SEACAR_QAQC_Description columns of the export data. The Include column indicates whether the QAQC Flag will also indicate that data are excluded from analysis. No data are excluded from the data export, but the analysis scripts can use the Include column to exclude data (1 to include, 0 to exclude).

Continuous Water Quality threshold values
Parameter Name Units Low Threshold High Threshold Sensor Type
Dissolved Oxygen mg/L 0 50 YSI EXOs
Dissolved Oxygen mg/L 0 50 Analysis Only - 2022-04-04
Dissolved Oxygen mg/L 0 50 6600 Series
Salinity ppt 0 70 6600 Series
Salinity ppt 0 70 YSI EXOs
Salinity ppt 0 70 Analysis Only - 2022-04-04
Water Temperature Degrees C -5 45 YSI EXOs
Water Temperature Degrees C -5 45 Analysis Only - 2022-04-04
Water Temperature Degrees C -5 45 6600 Series
pH pH 2 14 Analysis Only - 2022-04-04
pH pH 2 14 6600 Series
pH pH 2 14 YSI EXOs
Dissolved Oxygen Saturation % 0 500 YSI EXOs
Dissolved Oxygen Saturation % 0 500 6600 Series
Dissolved Oxygen Saturation % 0 500 Analysis Only - 2022-04-04
Specific Conductivity mS/cm 0 100 6600 Series
Specific Conductivity mS/cm 0 200 YSI EXOs
Turbidity NTU 0 4000 YSI EXOs
Turbidity NTU 0 1000 6600 Series
Turbidity NTU 0 4000 Analysis Only - 2022-04-04
Discrete Water Quality threshold values
Parameter Name Units Low Threshold High Threshold
Dissolved Oxygen mg/L 0.000001 22
Salinity ppt 0 70
Water Temperature Degrees C 3 40
pH 2 13
Dissolved Oxygen Saturation % 0.000001 310
Specific Conductivity mS/cm 0.005000001 100
Turbidity NTU 0 -
Total Suspended Solids (TSS) mg/L 0 -
Chlorophyll a uncorrected for pheophytin ug/L 0 -
Chlorophyll a corrected for pheophytin ug/L 0 -
Secchi Depth m 0.000001 50
Light Extinction Coefficient m^1 0 -
Colored dissolved organic matter, CDOM PCU 0 -
Fluorescent dissolved organic matter, FDOM QSE 0 -
Total Nitrogen mg/L 0 -
Total Kjeldahl Nitrogen TKN mg/L 0 -
NO2+3 Filtered mg/L 0 -
NH4 Filtered mg/L 0 -
Total Phosphorus mg/L 0 -
PO4 Filtered mg/L 0 -
Ammonia- Un-ionized (NH3) mg/L 0 -
Nitrate (N) mg/L 0 -
Nitrite (N) mg/L 0 -
Nitrogen, organic mg/L 0 -
Quality Assurance Flags inserted based on threshold checks listed in Table 1 & 2
SEACAR QAQC Description Include SEACAR QAQCFlagCode
Exceeds Maximum threshold. Not verified in raw data No 2Q
Exceeds Maximum threshold. Verified in raw data No 3Q
Below Minimum threshold. Not verified in raw data No 4Q
Below Minimum threshold. Verified in raw data No 5Q
Within threshold tolerance Yes 6Q
No defined thresholds for this parameter Yes 7Q

Value Qualifiers

Value qualifier codes included within the data are used to exclude certain results from the analysis. The data are retained in the data export files, but the analysis uses the Include column to filter the results.

STORET and WIN value qualifier codes

Value qualifier codes from STORET and WIN data are examined with the database and used to populate the Include column in data exports.

Value Qualifier codes excluded from analysis
Qualifier Source Value Qualifier Include MDL Description
STORET-WIN H No 0 Value based on field kit determination; results may not be accurate
STORET-WIN J No 0 Estimated value
STORET-WIN V No 0 Analyte was detected at or above method detection limit
STORET-WIN Y No 0

Discrete Water Quality Value Qualifiers

The following value qualifiers are highlighted in the Discrete Water Quality section of this report. An exception is made for Program 476 - Charlotte Harbor Estuaries Volunteer Water Quality Monitoring Network and data flagged with Value Qualifier H are included for this program only.

H - Value based on field kit determiniation; results may not be accurate. This code shall be used if a field screening test (e.g., field gas chromatograph data, immunoassay, or vendor-supplied field kit) was used to generate the value and the field kit or method has not been recognized by the Department as equivalent to laboratory methods.

I - The reported value is greater than or equal to the laboratory method detection limit but less than the laboratory practical quantitation limit.

Q - Sample held beyond the accepted holding time. This code shall be used if the value is derived from a sample that was prepared or analyzed after the approved holding time restrictions for sample preparation or analysis.

S - Secchi disk visible to bottom of waterbody. The value reported is the depth of the waterbody at the location of the Secchi disk measurement.

U - Indicates that the compound was analyzed for but not detected. This symbol shall be used to indicate that the specified component was not detected. The value associated with the qualifier shall be the laboratory method detection limit. Unless requested by the client, less than the method detection limit values shall not be reported

Systemwide Monitoring Program (SWMP) value qualifier codes

Value qualifier codes from the SWMP continuous program are examined with the database and used to populate the Include column in data exports. SWMP Qualifier Codes are indicated by QualifierSource=SWMP.

SWMP Value Qualifier codes
Qualifier Source Value Qualifier Include Description
SWMP -1 Yes Optional parameter not collected
SWMP -2 No Missing data
SWMP -3 No Data rejected due to QA/QC
SWMP -4 No Outside low sensor range
SWMP -5 No Outside high sensor range
SWMP 0 Yes Passed initial QA/QC checks
SWMP 1 No Suspect data
SWMP 2 Yes Reserved for future use
SWMP 3 Yes
SWMP 4 Yes Historical: Pre-auto QA/QC
SWMP 5 Yes Corrected data

Water Column

The water column habitat extends from the surface of all water bodies to the bottom sediments and encompasses the different features found in the water at different depths (National Oceanographic Center, 2016). The water column habitat must be viewed in relation to its interconnectedness with other habitats. A healthy water column is an integral component in ensuring a healthy marine and coastal ecosystem. Having a flourishing marine and coastal ecosystem in Florida is necessary to support a strong economy. The health of the water column is dependent upon factors as diverse as land use (e.g., agriculture, mining, forestry practices); human population growth; emissions, (e.g., power plants, automobiles, wastewater); climate (e.g., rainfall, temperature, winds and currents); and decadal trends (e.g., El Niño/La Niña, Atlantic Multidecadal Oscillation, climate change).

The water column is composed of various physical, chemical and biological features, and only a small number of them are adequately monitored. Features of the water column that are monitored are used as indicators of the water column health and help assess the status of other habitats. These indicators include nutrient concentrations (nitrogen and phosphorus); water quality (dissolved oxygen, temperature, salinity and pH); water clarity (Secchi depth, turbidity, chlorophyll-a and colored dissolved organic matter); and nekton (fish, macroinvertebrates and megafauna).

Seasonal Kendall-Tau Analysis

Indicators must have a minimum of five to ten years, depending on the habitat, of data within the geographic range of the analysis to be included in the analysis. Ten years of data are required for discrete parameters, and five years of data are required for continuous parameters. If there are insufficient years of data, the number of years of data available will be noted and labeled as “insufficient data to conduct analysis”. Further, for the preferred Seasonal Kendall-Tau test, there must be data from at least two months in common across at least two consecutive years within the RCP managed area being analyzed. Values that pass both of these tests will be included in the analysis and be labeled as Use_In_Analysis = TRUE. Any that fail either test will be excluded from the analyses and labeled as Use_In_Analysis = FALSE.

Water Quality - Discrete

The following files were used in the discrete analysis:

  • Combined_WQ_WC_NUT_Chlorophyll_a_corrected_for_pheophytin-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Chlorophyll_a_uncorrected_for_pheophytin-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Colored_dissolved_organic_matter_CDOM-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Dissolved_Oxygen-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Dissolved_Oxygen_Saturation-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_pH-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Salinity-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Secchi_Depth-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Nitrogen-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Phosphorus-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Suspended_Solids_TSS-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Turbidity-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Water_Temperature-2024-Feb-22.txt

Chlorophyll a, Corrected for Pheophytin - Discrete Water Quality

Chlorophyll-a is monitored as a measure of microalgae growing in the water. Algae are a natural part of coastal and aquatic ecosystems but in excess can cause poor water quality and clarity, and decreased levels of dissolved oxygen.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Chlorophyll a, Corrected for Pheophytin
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Chlorophyll a, Corrected for Pheophytin
ProgramID N_Data YearMin YearMax
4054 6199 2002 2021
5002 711 2002 2023
5014 619 2017 2023

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Chlorophyll a, Corrected for Pheophytin
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2004 258 2 0.8 2 0.8 40 15.5
2005 424 18 4.2 8 1.9 123 29.0
2006 251 23 9.2
2008 234 2 0.8 1 0.4
2009 272 1 0.4
2010 254 4 1.6 4 1.6
2011 234 2 0.8
2012 235 1 0.4 2 0.8
2013 459 39 8.5 15 3.3 10 2.2
2014 460 43 9.3 17 3.7 11 2.4
2015 480 39 8.1 15 3.1 12 2.5
2016 446 33 7.4 18 4.0 4 0.9
2017 504 36 7.1 13 2.6 15 3.0
2018 599 51 8.5 20 3.3 13 2.2
2019 602 61 10.1 13 2.2 13 2.2
2020 537 58 10.8 11 2.0 19 3.5
2021 445 34 7.6 10 2.2 17 3.8
2022 183 17 9.3 21 11.5
2023 73 2 2.7 11 15.1 5 6.8

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5014 - Guana River and Guana Lake Water Quality Monitoring

Chlorophyll a, Uncorrected for Pheophytin - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Chlorophyll a, Uncorrected for Pheophytin
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Chlorophyll a, Uncorrected for Pheophytin
ProgramID N_Data YearMin YearMax
4054 4632 2002 2020
5014 678 2017 2023
5002 331 2008 2023
103 118 2020 2021
118 2 2006 2006

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5014 - Guana River and Guana Lake Water Quality Monitoring
5002 - Florida STORET / WIN
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Chlorophyll a, Uncorrected for Pheophytin
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2011 230 2 0.9
2012 230 2 0.9
2013 245 15 6.1 15 6.1 1 0.4
2014 455 17 3.7 17 3.7
2015 300 10 3.3 15 5.0 3 1.0
2016 257 12 4.7 18 7.0 1 0.4
2017 347 19 5.5 13 3.8 6 1.7
2018 434 23 5.3 20 4.6 1 0.2
2019 403 18 4.5 13 3.2 5 1.2
2020 317 33 10.4 11 3.5 2 0.6
2021 329 17 5.2 10 3.0 9 2.7
2022 183 8 4.4 17 9.3
2023 73 3 4.1 11 15.1 4 5.5

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5014 - Guana River and Guana Lake Water Quality Monitoring
5002 - Florida STORET / WIN

Colored Dissolved Organic Matter - Discrete Water Quality

Colored Dissolved Organic Matter (CDOM) occurs naturally in every water body. It is made up of mainly plant material, algae and bacteria. The composition is determined by its source; plants, soil, algae, and wastewater are common sources.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Colored Dissolved Organic Matter
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Colored Dissolved Organic Matter
ProgramID N_Data YearMin YearMax
4054 1334 2007 2012
5002 148 2020 2023
5014 7 2018 2018

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Colored Dissolved Organic Matter
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2020 39 10 25.6 5 12.8
2021 45 7 15.6
2022 43 12 27.9 5 11.6
2023 21 5 23.8

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Dissolved Oxygen - Discrete Water Quality

Dissolved Oxygen (DO) is a key indicator of water quality. Oxygen enters surface waters by air-sea gas exchange, by wind action, or as a byproduct of aquatic plant photosynthesis. The actual quantity of DO in aquatic environments is dependent on the above processes as well as water temperature and salinity.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Dissolved Oxygen
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Dissolved Oxygen
ProgramID N_Data YearMin YearMax
5002 17797 1995 2023
4054 2817 2002 2020
95 395 2007 2018
5014 276 2017 2022
69 171 2001 2010
103 168 2020 2021
118 1 2006 2006

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
95 - Harmful Algal Bloom Marine Observation Network
5014 - Guana River and Guana Lake Water Quality Monitoring
69 - Fisheries-Independent Monitoring (FIM) Program
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment

There are no qualifying Value Qualifiers for Dissolved Oxygen in Guana Tolomato Matanzas National Estuarine Research Reserve

Dissolved Oxygen Saturation - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Dissolved Oxygen Saturation
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Dissolved Oxygen Saturation
ProgramID N_Data YearMin YearMax
5002 1975 1999 2023
5014 254 2017 2022
4054 4 2018 2019
95 3 2012 2013

Program names:

5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
95 - Harmful Algal Bloom Marine Observation Network

There are no qualifying Value Qualifiers for Dissolved Oxygen Saturation in Guana Tolomato Matanzas National Estuarine Research Reserve

pH - Discrete Water Quality

The pH of water is the measure of how acidic or basic the water body is on a scale of 0-14, with lower readings indicating acidic and higher readings indicating basic, and a pH of 7 being neutral. Florida’s natural waters fall between 6.5 and 8.5 on this scale. A water body’s pH can change due to precipitation, geology, vegetation, water pollution and air pollution.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for pH
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for pH
ProgramID N_Data YearMin YearMax
5002 14424 1995 2023
4054 2801 2002 2020
95 393 2007 2018
5014 283 2017 2022
69 176 2001 2010
103 168 2020 2021

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
95 - Harmful Algal Bloom Marine Observation Network
5014 - Guana River and Guana Lake Water Quality Monitoring
69 - Fisheries-Independent Monitoring (FIM) Program
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

There are no qualifying Value Qualifiers for pH in Guana Tolomato Matanzas National Estuarine Research Reserve

Salinity - Discrete Water Quality

Salinity is a measure of the amount of salt in the water. In estuarine ecosystems, salinity is influenced by precipitation, evaporation, surface-water inputs, and exchange with coastal waters.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Salinity
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Salinity
ProgramID N_Data YearMin YearMax
5002 20468 1995 2023
4054 3361 2002 2019
95 556 1980 2018
5014 283 2017 2022
69 176 2001 2010
118 2 2015 2015

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
95 - Harmful Algal Bloom Marine Observation Network
5014 - Guana River and Guana Lake Water Quality Monitoring
69 - Fisheries-Independent Monitoring (FIM) Program
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment

There are no qualifying Value Qualifiers for Salinity in Guana Tolomato Matanzas National Estuarine Research Reserve

Secchi Depth - Discrete Water Quality

Secchi depth is a measure of the transparency or clarity of the water by a device called a Secchi disk. A Secchi disk is a black and white disk that is lowered into the water on a cord. The Secchi depth is the depth at which the disk can no longer be seen. The deeper the Secchi depth, the greater the water clarity.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Secchi Depth
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Secchi Depth
ProgramID N_Data YearMin YearMax
5002 1268 1999 2023
4054 937 2002 2014
5014 240 2017 2022
69 176 2001 2010
103 93 2020 2021

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5014 - Guana River and Guana Lake Water Quality Monitoring
69 - Fisheries-Independent Monitoring (FIM) Program
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Secchi Depth
Year N_Total N_S perc_S
2017 65 1 1.5
2018 73 1 1.4
2019 32 3 9.4
2020 171 13 7.6
2021 279 10 3.6
2022 180 15 8.3
2023 35 1 2.9

Note: 1S - Secchi disk visible to bottom of waterbody

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Total Nitrogen - Discrete Water Quality

Nitrogen and Phosphorous are key nutrients that provide nourishment essential for the growth and maintenance of aquatic plants and animals; however, excess nutrients can cause harmful algal blooms and other water quality concerns. Nutrients enter water bodies several ways, including runoff from rain events and atmospheric deposition from natural and industrial sources.

Total Nitrogen Calculation:

The logic for calculated Total Nitrogen was provided by Kevin O’Donnell and colleagues at FDEP (with the help of Jay Silvanima, Watershed Monitoring Section). The following logic is used, in this order, based on the availability of specific nitrogen components.

  1. TN = TKN + NO3O2;
  2. TN = TKN + NO3 + NO2;
  3. TN = ORGN + NH4 + NO3O2;
  4. TN = ORGN + NH4 + NO2 + NO3;
  5. TN = TKN + NO3;
  6. TN = ORGN + NH4 + NO3;

Additional Information:

  • Rules for use of sample fraction:
    • FDEP report that if both “Total” and “Dissolved” are reported, only “Total” is used. If the total is not reported, they do use dissolved as a best available replacement.
    • An analysis of all SEACAR data shows that 90% of all possible TN calculations can be done using nitrogen components with the same sample fraction, rather than use nitrogen components with mixed total/dissolved sample fractions. In other words, TN can be calculated when TKN and NO3O2 are both total sample fraction, or when both are dissolved sample fraction. This is important, because then the calculated TN value is not based on components with mixed sample fractions.
  • Values inserted into data:
    • ParameterName = “Total Nitrogen”
    • SEACAR_QAQCFlagCode = “1Q”
    • SEACAR_QAQC_Description = “SEACAR Calculated”
      Seasonal Kendall-Tau Trend Analysis
      Discrete Water Quality
      Map showing location of Discrete sampling sites for Total Nitrogen
      Discrete Water Quality
      The bubble size on the above plots reflects the amount of data available at each sampling site
Programs contributing data for Total Nitrogen
ProgramID N_Data YearMin YearMax
4054 3003 2002 2020
5002 1998 1997 2023
5014 550 2017 2022

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

There are no qualifying Value Qualifiers for Total Nitrogen in Guana Tolomato Matanzas National Estuarine Research Reserve

Total Phosphorus - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Total Phosphorus
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Total Phosphorus
ProgramID N_Data YearMin YearMax
4054 4495 2002 2020
5002 3137 1997 2023
5014 620 2017 2023
103 59 2020 2021

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Total Phosphorus
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
1997 102 1 1.0
1998 120 1 0.8 5 4.2
1999 154 7 4.6 8 5.2
2000 124 3 2.4 1 0.8
2001 114 9 7.9
2002 256 2 0.8
2004 371 3 0.8
2005 524 127 24.2 1 0.2
2006 356 104 29.2
2007 335 92 27.5
2008 344 79 23.0 1 0.3
2009 365 96 26.3
2010 358 94 26.3
2011 349 70 20.1
2012 358 89 24.9
2013 356 94 26.4
2014 574 74 12.9
2015 374 92 24.6 14 3.7
2016 349 91 26.1
2017 344 45 13.1
2018 370 3 0.8
2019 385 2 0.5
2020 388 18 4.6 8 2.1 1 0.3
2021 313 23 7.3 2 0.6 36 11.5
2022 224 10 4.5 2 0.9 8 3.6
2023 73 1 1.4

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Total Suspended Solids - Discrete Water Quality

Total Suspended Solids (TSS) are solid particles suspended in water that exceed 2 microns in size and can be trapped by a filter.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Total Suspended Solids
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Total Suspended Solids
ProgramID N_Data YearMin YearMax
4054 3713 2002 2020
5002 2393 1997 2023
5014 139 2018 2022
103 60 2020 2021

Program names:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Total Suspended Solids
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
1998 120 2 1.7
1999 120 2 1.7 1 0.8
2000 117 2 1.7
2001 114 21 18.4
2002 166 1 0.6 11 6.6 2 1.2
2004 207 3 1.4
2005 230 10 4.3
2009 365 11 3.0 3 0.8
2010 357 6 1.7 10 2.8 6 1.7
2011 332 4 1.2 7 2.1
2012 293 17 5.8 1 0.3
2013 299 93 31.1 1 0.3
2014 512 93 18.2
2015 323 83 25.7 3 0.9
2016 294 90 30.6 2 0.7 2 0.7
2017 261 52 19.9 1 0.4
2018 271 105 38.8 1 0.4 3 1.1
2019 288 69 24.0 3 1.0
2020 263 71 27.0 1 0.4 3 1.1
2021 178 39 21.9 5 2.8 5 2.8
2022 116 36 31.0 3 2.6
2023 24 11 45.8 1 4.2

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Turbidity - Discrete Water Quality

Turbidity results from suspended solids in the water, including silts, clays, tannins, industrial wastes, sewage and plankton, which are all factors that contribute to how clouded or murky a water column is. Turbidity is caused by soil erosion, excess nutrients, pollutants, and physical forces such as winds, currents and bottom feeders.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Turbidity
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Turbidity
ProgramID N_Data YearMin YearMax
5002 14347 1995 2023
4054 2581 2002 2020
5014 139 2018 2022
103 59 2020 2021
95 4 2012 2012

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5014 - Guana River and Guana Lake Water Quality Monitoring
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
95 - Harmful Algal Bloom Marine Observation Network

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Turbidity
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
1997 1279 2 0.2
1998 1062 3 0.3
2001 810 1 0.1
2010 788 1 0.1 2 0.2
2011 686 7 1.0
2013 59 1 1.7 10 17.0
2015 81 1 1.2 11 13.6
2016 61 3 4.9 1 1.6
2019 150 7 4.7
2020 182 3 1.6
2021 177 1 0.6 1 0.6
2022 116 2 1.7

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
5002 - Florida STORET / WIN
5014 - Guana River and Guana Lake Water Quality Monitoring

Water Temperature - Discrete Water Quality

Temperature determines the capacity of water to hold oxygen. Cooler water can hold more dissolved oxygen because water molecules are more tightly packed, making it harder for oxygen to escape. Additionally, as water temperature increases, fish and other aquatic organisms become more active and consume oxygen at a faster rate.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Water Temperature
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Water Temperature
ProgramID N_Data YearMin YearMax
5002 20952 1995 2023
4054 2878 2002 2020
95 527 2007 2018
5014 283 2017 2022
69 176 2001 2010
103 168 2020 2021

Program names:

5002 - Florida STORET / WIN
4054 - Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program
95 - Harmful Algal Bloom Marine Observation Network
5014 - Guana River and Guana Lake Water Quality Monitoring
69 - Fisheries-Independent Monitoring (FIM) Program
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

There are no qualifying Value Qualifiers for Water Temperature in Guana Tolomato Matanzas National Estuarine Research Reserve

Water Quality - Continuous

The following files were used in the continuous analysis:

  • Combined_WQ_WC_NUT_cont_Dissolved_Oxygen_NE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Dissolved_Oxygen_Saturation_NE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_pH_NE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Salinity_NE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Turbidity_NE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Water_Temperature_NE-2024-Feb-22.txt

Continuous Water Quality
Map showing Continuous Water Quality Monitoring sampling locations within the boundaries of Guana Tolomato Matanzas National Estuarine Research Reserve. Sites marked as Use In Analysis are featured in this report.

Dissolved Oxygen - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Dissolved Oxygen
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 596138 22 2001 - 2022 6.5 0.06 6.29 0.00 0.2176
gtmpcwq 600043 21 2002 - 2022 5.5 0.05 5.16 0.01 0.2935
gtmpiwq 576064 22 2001 - 2022 5.9 -0.05 5.72 0.00 0.2940
gtmsswq 573658 21 2002 - 2022 6.3 0.14 5.91 0.01 0.0026

Dissolved Oxygen Saturation - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Dissolved Oxygen Saturation
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 603708 22 2001 - 2022 92.6 0.12 89.65 0.09 0.0062
gtmpcwq 600043 21 2002 - 2022 71.1 0.07 66.10 0.11 0.1183
gtmpiwq 580954 22 2001 - 2022 83.1 -0.11 81.79 -0.12 0.0155
gtmsswq 579594 21 2002 - 2022 89.6 0.21 83.84 0.17 0.0000

pH - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - pH
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 581432 22 2001 - 2022 8.0 -0.14 7.98 0 0.0025
gtmpcwq 589314 21 2002 - 2022 7.4 -0.05 7.42 0 0.3107
gtmpiwq 572116 22 2001 - 2022 7.6 -0.15 7.61 0 0.0009
gtmsswq 551772 21 2002 - 2022 7.9 0.06 7.84 0 0.1882

Salinity - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Salinity
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 588038 22 2001 - 2022 34.50 -0.13 34.79 -0.06 0.0031
gtmpcwq 605026 21 2002 - 2022 17.00 -0.02 15.4 -0.04 0.6811
gtmpiwq 577716 22 2001 - 2022 28.30 -0.23 33.04 -0.31 0.0000
gtmsswq 559678 21 2002 - 2022 34.00 -0.1 34.08 -0.05 0.0379
872-0494 34909 2 2020 - 2021 8.99 - - - -

Turbidity - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Turbidity
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 585658 22 2001 - 2022 7 -0.06 9.08 -0.04 0.1661
gtmpcwq 582963 21 2002 - 2022 9 -0.03 9.27 -0.02 0.5792
gtmpiwq 550907 22 2001 - 2022 10 -0.09 14.95 -0.07 0.0558
gtmsswq 545422 21 2002 - 2022 9 0.07 10.01 0.05 0.1672

Water Temperature - Continuous Water Quality

gtmfmwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpcwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmpiwq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

gtmsswq

Guana Tolomato Matanzas National Estuarine Research Reserve System-Wide Monitoring Program (4054)
Continuous Water Quality

All Stations Combined

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
gtmfmwq 623154 22 2001 - 2022 23.50 0.21 23.09 0.05 0.0000
gtmpcwq 613439 21 2002 - 2022 24.30 0.14 23.77 0.05 0.0025
gtmpiwq 627043 22 2001 - 2022 24.10 0.18 23.34 0.04 0.0001
gtmsswq 591934 21 2002 - 2022 23.70 0.21 23 0.06 0.0000
872-0494 35473 2 2020 - 2021 22.34 - - - -